hw/ide/piix.c

   1 /*
   2  * QEMU IDE Emulation: PCI PIIX3/4 support.
   3  *
   4  * Copyright (c) 2003 Fabrice Bellard
   5  * Copyright (c) 2006 Openedhand Ltd.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a copy
   8  * of this software and associated documentation files (the "Software"), to deal
   9  * in the Software without restriction, including without limitation the rights
  10  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11  * copies of the Software, and to permit persons to whom the Software is
  12  * furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included in
  15  * all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  23  * THE SOFTWARE.
  24  */
  25 #include <hw/hw.h>
  26 #include <hw/pc.h>
  27 #include <hw/pci.h>
  28 #include <hw/isa.h>
  29 #include "block.h"
  30 #include "block_int.h"
  31 #include "sysemu.h"
  32 #include "dma.h"
  33
  34 #include <hw/ide/pci.h>
  35
  36 static uint32_t bmdma_readb(void *opaque, uint32_t addr)
  37 {
  38     BMDMAState *bm = opaque;
  39     uint32_t val;
  40
  41     switch(addr & 3) {
  42     case 0:
  43         val = bm->cmd;
  44         break;
  45     case 2:
  46         val = bm->status;
  47         break;
  48     default:
  49         val = 0xff;
  50         break;
  51     }
  52 #ifdef DEBUG_IDE
  53     printf("bmdma: readb 0x%02x : 0x%02x\n", addr, val);
  54 #endif
  55     return val;
  56 }
  57
  58 static void bmdma_writeb(void *opaque, uint32_t addr, uint32_t val)
  59 {
  60     BMDMAState *bm = opaque;
  61 #ifdef DEBUG_IDE
  62     printf("bmdma: writeb 0x%02x : 0x%02x\n", addr, val);
  63 #endif
  64     switch(addr & 3) {
  65     case 2:
  66         bm->status = (val & 0x60) | (bm->status & 1) | (bm->status & ~val & 0x06);
  67         break;
  68     }
  69 }
  70
  71 static void bmdma_map(PCIDevice *pci_dev, int region_num,
  72                     pcibus_t addr, pcibus_t size, int type)
  73 {
  74     PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, pci_dev);
  75     int i;
  76
  77     for(i = 0;i < 2; i++) {
  78         BMDMAState *bm = &d->bmdma[i];
  79         bmdma_init(&d->bus[i], bm);
  80         bm->bus = d->bus+i;
  81         qemu_add_vm_change_state_handler(d->bus[i].dma->ops->restart_cb,
  82                                          &bm->dma);
  83
  84         register_ioport_write(addr, 1, 1, bmdma_cmd_writeb, bm);
  85
  86         register_ioport_write(addr + 1, 3, 1, bmdma_writeb, bm);
  87         register_ioport_read(addr, 4, 1, bmdma_readb, bm);
  88
  89         iorange_init(&bm->addr_ioport, &bmdma_addr_ioport_ops, addr + 4, 4);
  90         ioport_register(&bm->addr_ioport);
  91         addr += 8;
  92     }
  93 }
  94
  95 static void piix3_reset(void *opaque)
  96 {
  97     PCIIDEState *d = opaque;
  98     uint8_t *pci_conf = d->dev.config;
  99     int i;
 100
 101     for (i = 0; i < 2; i++) {
 102         ide_bus_reset(&d->bus[i]);
 103     }
 104
 105     /* TODO: this is the default. do not override. */
 106     pci_conf[PCI_COMMAND] = 0x00;
 107     /* TODO: this is the default. do not override. */
 108     pci_conf[PCI_COMMAND + 1] = 0x00;
 109     /* TODO: use pci_set_word */
 110     pci_conf[PCI_STATUS] = PCI_STATUS_FAST_BACK;
 111     pci_conf[PCI_STATUS + 1] = PCI_STATUS_DEVSEL_MEDIUM >> 8;
 112     pci_conf[0x20] = 0x01; /* BMIBA: 20-23h */
 113 }
 114
 115 static int pci_piix_ide_initfn(PCIIDEState *d)
 116 {
 117     uint8_t *pci_conf = d->dev.config;
 118
 119     pci_conf[PCI_CLASS_PROG] = 0x80; // legacy ATA mode
 120     pci_config_set_class(pci_conf, PCI_CLASS_STORAGE_IDE);
 121
 122     qemu_register_reset(piix3_reset, d);
 123
 124     pci_register_bar(&d->dev, 4, 0x10, PCI_BASE_ADDRESS_SPACE_IO, bmdma_map);
 125
 126     vmstate_register(&d->dev.qdev, 0, &vmstate_ide_pci, d);
 127
 128     ide_bus_new(&d->bus[0], &d->dev.qdev, 0);
 129     ide_bus_new(&d->bus[1], &d->dev.qdev, 1);
 130     ide_init_ioport(&d->bus[0], 0x1f0, 0x3f6);
 131     ide_init_ioport(&d->bus[1], 0x170, 0x376);
 132
 133     ide_init2(&d->bus[0], isa_reserve_irq(14));
 134     ide_init2(&d->bus[1], isa_reserve_irq(15));
 135     return 0;
 136 }
 137
 138 static int pci_piix3_ide_initfn(PCIDevice *dev)
 139 {
 140     PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, dev);
 141
 142     pci_config_set_vendor_id(d->dev.config, PCI_VENDOR_ID_INTEL);
 143     pci_config_set_device_id(d->dev.config, PCI_DEVICE_ID_INTEL_82371SB_1);
 144     return pci_piix_ide_initfn(d);
 145 }
 146
 147 static int pci_piix4_ide_initfn(PCIDevice *dev)
 148 {
 149     PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, dev);
 150
 151     pci_config_set_vendor_id(d->dev.config, PCI_VENDOR_ID_INTEL);
 152     pci_config_set_device_id(d->dev.config, PCI_DEVICE_ID_INTEL_82371AB);
 153     return pci_piix_ide_initfn(d);
 154 }
 155
 156 /* hd_table must contain 4 block drivers */
 157 /* NOTE: for the PIIX3, the IRQs and IOports are hardcoded */
 158 PCIDevice *pci_piix3_ide_init(PCIBus *bus, DriveInfo **hd_table, int devfn)
 159 {
 160     PCIDevice *dev;
 161
 162     dev = pci_create_simple(bus, devfn, "piix3-ide");
 163     pci_ide_create_devs(dev, hd_table);
 164     return dev;
 165 }
 166
 167 /* hd_table must contain 4 block drivers */
 168 /* NOTE: for the PIIX4, the IRQs and IOports are hardcoded */
 169 PCIDevice *pci_piix4_ide_init(PCIBus *bus, DriveInfo **hd_table, int devfn)
 170 {
 171     PCIDevice *dev;
 172
 173     dev = pci_create_simple(bus, devfn, "piix4-ide");
 174     pci_ide_create_devs(dev, hd_table);
 175     return dev;
 176 }
 177
 178 static PCIDeviceInfo piix_ide_info[] = {
 179     {
 180         .qdev.name    = "piix3-ide",
 181         .qdev.size    = sizeof(PCIIDEState),
 182         .qdev.no_user = 1,
 183         .init         = pci_piix3_ide_initfn,
 184     },{
 185         .qdev.name    = "piix4-ide",
 186         .qdev.size    = sizeof(PCIIDEState),
 187         .qdev.no_user = 1,
 188         .init         = pci_piix4_ide_initfn,
 189     },{
 190         /* end of list */
 191     }
 192 };
 193
 194 static void piix_ide_register(void)
 195 {
 196     pci_qdev_register_many(piix_ide_info);
 197 }
 198 device_init(piix_ide_register);